CN111331711A

CN111331711A - Tunnel pre-buried groove mould locking device

Info

Publication number: CN111331711A
Application number: CN202010097218.9A
Authority: CN
Inventors: 于国军; 刘雅林; 苏波; 刘浪; 周杰
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-06-26

Abstract

The invention discloses a tunnel embedded groove mold locking device, which relates to the field of engineering construction and comprises an embedded anchor rod, a locking screw rod, a channel, a pincer-shaped plastic piece, a T-shaped connecting piece, a fastening steel plate and a bolt. The invention is used for the field of installation and fixation of a large number of equipment pipelines such as contact networks, evacuation platforms and the like in subway tunnels. Compared with the existing embedded groove, the invention can accurately lock the embedded groove and the die, ensure the integrity of the main body structure, is easy to demould and saves the space of the tunnel.

Description

Tunnel pre-buried groove mould locking device

Technical Field

The invention mainly relates to the field of installation and fixation of a large number of equipment pipelines such as a contact net and an evacuation platform in a subway tunnel, in particular to a locking device for a tunnel embedded groove mold.

Background

At present, along with economic development, urban rail transit construction starts in all big cities in China, and the embedded groove technology enters the visual field of people in the industry fields of subways, high-speed rails and the like. The location of current embedded groove generally adopts welding or plastic connection, and this kind of locate mode of channel welding is unfavorable for the drawing of patterns of embedded groove, so the plastic connection mode has been aroused gradually, because plastic connection has not only accelerated the efficiency of construction, practices thrift the cost, and the drawing of patterns of being convenient for is more important, nevertheless because of connection technology's improper, can bring certain drawback for concrete placement and section of jurisdiction use. Such as: the clamp is applied to the installation and positioning of the channel, and can be loosened when the concrete is vibrated, and the stress cannot be ensured only by the buckle; the plastic connecting piece can be generally combined with the bolt to be applied to channel fixing, and the positioning hole is arranged at the back of the channel, so that the fixing of the embedded groove is realized, however, when the concrete curing is completed and the demoulding is needed, the plastic connecting piece is left in the duct piece, and the stress concentration phenomenon of the concrete can be caused.

The invention discloses a positioning device for an embedded channel of a subway segment and a using method thereof, and the positioning device is provided with a rotating sleeve, wherein the rotating sleeve comprises a first sleeve and a second sleeve, the first sleeve is connected with a first connecting rod in a screwing manner, the second sleeve is connected with a second connecting rod in a screwing manner, the top end of the first connecting rod is provided with a hoop, the first connecting rod is fixedly connected with a reinforcement cage by utilizing the hoop, the second connecting rod is welded with the channel, and the attachment of the embedded channel and a segment mold is realized by adjusting the contact position of the first connecting rod and the first sleeve, namely the installation and positioning of the embedded channel are completed. Utilize the staple bolt to realize the location, be favorable to the used cycle of section of jurisdiction, nevertheless when the concrete vibrates, because the material attribute of staple bolt may be connected insecurely, the reinforcing bar and the channel line type of easily appearing are not coincident, lead to the two to have stress, make the concrete crack appear. The patent CN109159275A of the invention designs a fixing structure and an embedded construction method for a segment embedded channel of a metro shield interval, wherein a channel is provided with a mounting hole of a positioning bolt, a segment mold is provided with a corresponding positioning hole, the positioning bolt is provided with a special-shaped section, the positioning nut is made of plastic, one end of the positioning bolt is connected with the positioning nut, the other end of the positioning bolt penetrates through the positioning hole on the mold to be connected with a locking screw, namely, the fixation of an embedded groove and the mold is realized, and the positioning bolt can be separated from the positioning nut during demolding. But the mounting hole is seted up at the channel back, has damaged the channel structure, can't ensure the service function of channel, moreover, after the drawing of patterns, set nut stays in the section of jurisdiction, easily causes stress concentration phenomenon, influences the bearing capacity of section of jurisdiction.

Disclosure of Invention

Aiming at the problems in the prior art, the invention designs a locking device for a tunnel embedded groove die, which overcomes the defects that the quality of a main body is easy to damage and the construction difficulty is increased in the traditional embedded groove installation. Compared with the existing embedded channel, the invention is provided with the I-shaped combined structure and the forcipate plastic piece, and utilizes the locking screw to realize the accurate locking of the embedded groove and the mould, thereby not only reducing the damage to the channel and preventing the slurry from leaking easily when the concrete is poured, but also improving the demoulding efficiency of the duct piece.

The invention is realized by the following technical scheme:

a tunnel pre-buried groove mold locking device comprises a pre-buried anchor rod, a pincerlike plastic piece and a mold, wherein one end of the pre-buried anchor rod is in threaded connection with a square steel plate, an internal thread is formed in the other end of the pre-buried anchor rod, one end of a locking screw rod is screwed into the pre-buried anchor rod, and the pre-buried anchor rod and a groove channel are connected together through the locking screw rod and locked through a hexagon nut; the other end of the locking screw rod is provided with a trapezoidal groove, the trapezoidal groove is clamped with one end of the pincerlike plastic part, the inside of the pincerlike plastic part is provided with threads, and the bolt penetrates through the die and is in threaded connection with the pincerlike plastic part.

Furthermore, the clamp-shaped plastic part and the clamping part of the trapezoidal groove are provided with threads, the inner side of the trapezoidal groove is also provided with internal threads, and the clamp-shaped plastic part is in threaded connection with the trapezoidal groove.

Furthermore, the pincer-shaped plastic part is of a convex structure and is of a hollow structure, one end of the T-shaped connecting piece is screwed into the pincer-shaped plastic part, and a fastening steel plate is sleeved on the part, protruding out of the pincer-shaped plastic part, of the other end of the T-shaped connecting piece; the T-shaped connecting piece is of a hollow structure, and the bolt penetrates through the center of the T-shaped connecting piece and is in threaded connection with the T-shaped connecting piece; the fastening steel plate is arranged between the pincer-shaped plastic part and the mold.

Furthermore, the T-shaped connecting piece is in threaded connection with the fastening steel plate.

Furthermore, the fastening steel plate and the T-shaped connecting piece form an I-shaped structure.

Furthermore, a gasket is arranged between the hexagonal nut and the channel.

Further, the cross section of the channel is of an isosceles trapezoid structure, the hexagonal nut and the pincerlike plastic part are arranged in the channel, the upper end face of the channel is attached to the lower end face of the embedded anchor rod, and the lower end face of the channel is in contact with the mold.

Further, the mould is a duct piece mould, and the longitudinal section of the mould is of an arc-shaped structure.

Further, be provided with the several bolt on the mould, and all be connected with the pincerlike working of plastics on the bolt, the joint has locking screw on the pincerlike working of plastics, is connected with pre-buried stock on the locking screw.

Further, the bolt is in threaded connection with the die.

Compared with the prior art, the invention has the following advantages:

1. aiming at the defects that the main body structure is easy to damage and the construction is complicated when the traditional embedded groove is installed, the I-shaped positioning combined structure, the forcipated plastic piece and the bolt are arranged, and the locking screw is utilized to realize the accurate locking of the embedded groove and the mold, so that the damage degree to the channel and the duct piece mold is reduced, the integrity of the main body structure is ensured, the demolding efficiency of the duct piece is improved, and manpower and material resources are saved.

2. Aiming at the problem that the strength of the segment is reduced and easy to crack due to the fact that a plastic part is additionally arranged on the back of a part of embedded groove for positioning, the clamp-shaped plastic part is arranged, the locking screw and the T-shaped connecting piece are integrated, and the locking screw, the T-shaped connecting piece and the clamp-shaped plastic part are tightly clamped by the fastening steel plate, so that the clamp-shaped plastic part can be prevented from falling off when concrete is vibrated, a channel does not need to be provided with a hole, the channel is fixed from the inside.

3. Aiming at the defect that the existing embedded groove is not easy to maintain and replace for a long time, the embedded groove components are respectively set to be movable, and the embedded groove is easy to maintain and replace when damaged after long-term use.

4. Aiming at the defect that the traditional rear anchor technology is easy to damage the tunnel structure, the embedded groove is arranged to fix the electromechanical equipment in the tunnel, so that the damage to the tunnel structure is avoided, the operating environment is improved, and the tunnel space is saved.

5. Set up T type connecting piece in the shaping working of plastics of pincers, and the shaping working of plastics of pincers and T type connecting piece junction are threaded connection, the intensity of the shaping working of plastics of pincers has been improved like this, in addition, T type connecting piece is hollow structure, the bolt can pass T type connecting piece and shaping working of plastics threaded connection like this, the bolt also can design into threaded connection with T type connecting piece, make holistic intensity increase like this, it is fixed with T type connecting piece through the bolt, thereby the utilization ratio of T type spare has been improved, can further design, make T type connecting piece salient in the shaping connecting piece of pincers, the protruding part fastens the steel sheet soon, constitute I type integrated configuration with T type connecting piece like this, the joint strength of the two has further been improved, the fastening steel sheet contacts with the mould, the structural bonding is more stable.

Drawings

FIG. 1 is a schematic structural view of installation and positioning of an embedded groove;

FIG. 2 is a schematic view of the locking screw of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the pincer-shaped plastic part of FIG. 1 according to the present invention;

fig. 4 is a schematic view of an i-shaped positioning combination structure formed by the T-shaped connecting member and the fastening steel plate in fig. 1.

Fig. 5 is a schematic view of a segment mold of the present invention.

The reference numbers are as follows:

1-embedding an anchor rod; 2-square steel plate; 3-locking the screw rod; 4-a channel; 5-fastening a steel plate; 6-a gasket; 7-a hexagonal nut; 8-pincer-shaped plastic parts; 9-bolt; a 10-T shaped connector; 11-a mould; 12-trapezoidal grooves.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following first describes in detail embodiments according to the present invention with reference to the accompanying drawings

A tunnel pre-buried groove mold locking device comprises a pre-buried anchor rod 1, a pincerlike plastic part 8 and a mold 11, wherein one end of the pre-buried anchor rod 1 is in threaded connection with a square steel plate 2, an internal thread is formed at the other end of the pre-buried anchor rod 1, one end of a locking screw rod 3 is screwed into the pre-buried anchor rod 1, and the pre-buried anchor rod 1 and a channel 4 are connected together through the locking screw rod 3 and locked through a hexagon nut 7; the other end of the locking screw rod 3 is provided with a trapezoidal groove 12, the trapezoidal groove 12 is clamped with one end of the pincerlike plastic part 8, the inside of the pincerlike plastic part 8 is provided with threads, and the bolt 9 penetrates through the mold 11 and is in threaded connection with the pincerlike plastic part 8.

The clamping part of the forcipated plastic piece 8 and the trapezoidal groove 12 is provided with threads, the inner side of the trapezoidal groove 12 is also provided with internal threads, and the forcipated plastic piece 8 is in threaded connection with the trapezoidal groove 12; the pincer-shaped plastic part 8 is of a convex structure, the pincer-shaped plastic part 8 is of a hollow structure, the T-shaped connecting piece 10 is screwed into the pincer-shaped plastic part 8, the bolt 9 penetrates through the T-shaped connecting piece 10, and the part, protruding out of the pincer-shaped plastic part 8, of the T-shaped connecting piece 10 is sleeved with the fastening steel plate 5; the fastening steel plate 5 is arranged between the pincer-shaped plastic part 8 and the mould 11. The T-shaped connecting piece 10 is in threaded connection with the fastening steel plate 5.

The fastening steel plate 5 and the T-shaped connecting piece 10 form an I-shaped structure, so that the structure is firmer, the disassembly is convenient, and the reuse possibility is ensured.

Be provided with gasket 6 between hexagon nut 7 and

channel

4, 4 cross sections of channel are trapezium structure, and in hexagon nut 7, pincerlike working of plastics 8 arranged in channel 4, terminal surface laminating under 4 up end of channel and the pre-buried stock 1, terminal surface and the contact of mould 11 under 4.

With reference to fig. 5, the die 11 is a segment die, the longitudinal section of the die 11 is of an arc-shaped structure, the die 11 is provided with a plurality of bolts 9, the bolts 9 are connected with a T-shaped connecting piece 10 and a pincerlike plastic piece 8, the pincerlike plastic piece 8 is connected with a locking screw rod 3 in a clamping manner, the locking screw rod 3 is connected with a pre-embedded anchor rod 1, and the bolts 9 are in threaded connection with the die 11. Referring to the attached drawing 1, the locking device for the tunnel embedded groove die comprises an embedded anchor rod 1, a square steel plate 2, a locking screw 3, a channel 4, a fastening steel plate 5, a gasket 6, a hexagonal nut 7, a pincerlike plastic part 8, a bolt 9 and a T-shaped connecting piece 10; a round through hole with threads is formed in the center of the square steel plate 2, and the diameter of the through hole is consistent with that of the embedded anchor rod 1; a threaded hole is formed in the end part of the embedded anchor rod 1, and the diameter of the threaded hole is the same as that of the locking screw rod 3; the bottom of the locking screw 3 is provided with a trapezoidal groove 12 according to the design depth requirement, and the inner wall of the groove is rolled with threads; the back of the channel 4 is provided with a circular through hole with the diameter consistent with that of the locking screw rod 3; the locking screw 3 is connected with the embedded anchor rod 1 through a channel 4 and a gasket 6 and is fixed by a hexagon nut 7; by utilizing the thread principle, the fastening steel plate 5 is screwed into the T-shaped connecting piece 10 to form a whole to form an I-shaped combined structure. The section of the top end of the pincer-shaped plastic part 8 is set to be in a threaded trapezoidal form and is clamped with a trapezoidal groove 12 formed in the locking screw 3, the thickness of flanges on two sides of the bottom is consistent with the middle gap of an I-shaped positioning combined structure formed by the fastening steel plate 5 screwed into the T-shaped connecting piece 10, and meanwhile, the groove formed in the flange at the bottom of the pincer-shaped plastic part 8 is meshed with the arc-shaped protrusion of the T-shaped connecting piece 10. A round hole with the same diameter as the bolt 9 is formed in the T-shaped connecting piece 10, the outer ring of the rod body is provided with a rolling thread, the fastening steel plate 5 is provided with a threaded hole with the same diameter as the rod body of the T-shaped connecting piece 10, the bolt 9 is used for double fixing the T-shaped connecting piece and the rod body on the mold 11, and the pre-buried groove is locked on the mold 11.

The structural schematic diagram of the locking screw is shown in the attached drawing 2, the locking screw 3 is in a variable cross section form, a trapezoidal groove 12 with threads is formed in the bottom of the screw according to design requirements and tightly clamped with the top end of the pincerlike plastic part 8, a rod body of the locking screw 3 needs to be guaranteed to be of a certain length, and the formed trapezoidal groove 12 is prevented from influencing strength.

The combined figure 3 shows a pincerlike plastic part, the pincerlike plastic part 8 is of a convex structure, the bottom of the pincerlike plastic part 8 is arranged in a cavity form, a round hole with a certain depth is formed in the middle of the pincerlike plastic part, and the diameter of the round hole is the same as that of a bolt.

In combination with the I-shaped positioning combination structure shown in the attached drawing 4, the T-shaped connecting piece 10 and the fastening steel plate 5 are connected into a whole through threads, and the T-shaped connecting piece 10 and the fastening steel plate 5 form the I-shaped positioning combination structure, so that the connection strength between the T-shaped connecting piece and the fastening steel plate is improved.

The locking method of the pre-buried groove and the segment mould comprises the following steps:

firstly, by utilizing threaded connection, an embedded anchor rod 1 penetrates through a square steel plate 2 to form a whole with the square steel plate 2; the locking screw rod 3 is connected with the embedded anchor rod 1 through the gasket 6 and the hole formed in the channel 4, and is fixedly connected with the hexagonal nut 7, namely the embedded groove is assembled. Secondly, the top end of the pincer-shaped plastic part 8 is arranged in a trapezoidal groove 12 formed in the locking screw rod 3, and the two are tightly clamped by utilizing the threads of the contact surface and the trapezoidal groove to form a whole; the T-shaped connecting piece 10 is placed in the pincer-shaped plastic piece 8, then the fastening steel plate 5 is screwed into the T-shaped connecting piece 10, the T-shaped connecting piece, the pincer-shaped plastic piece and the T-shaped connecting piece are connected into a whole, finally, the pre-embedded groove is arranged according to the axis of the pre-embedded groove designed by the mold, the bolt 9 penetrates through the mold 11 to be fixed with the I-shaped combined structure, and the installation of the. After concrete curing is finished, when the pipe piece needs to be demolded, demolding pulling force is applied to the pipe piece, the part of the clamp-shaped plastic piece 8 and the locking screw rod 3 in a clamped mode can be broken, and the pre-buried groove and the mold 11 are detached.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. The tunnel pre-buried groove mold locking device is characterized by comprising a pre-buried anchor rod (1), a pincerlike plastic part (8) and a mold (11), wherein one end of the pre-buried anchor rod (1) is in threaded connection with a square steel plate (2), an internal thread is formed at the other end of the pre-buried anchor rod (1), one end of a locking screw rod (3) is screwed into the pre-buried anchor rod (1), and the pre-buried anchor rod (1) and a channel (4) are connected together through the locking screw rod (3) and locked through a hexagon nut (7); trapezoidal recess (12) have been seted up to the other end of locking screw (3), trapezoidal recess (12) and the one end joint of pincerlike working of plastics (8), and the inside of pincerlike working of plastics (8) is seted up threadedly, and bolt (9) pass mould (11) and with pincerlike working of plastics (8) threaded connection.

2. The tunnel embedded groove mold locking device according to claim 1, wherein the clamp-shaped plastic part (8) and the trapezoidal groove (12) are provided with threads at their clamping portions, and the trapezoidal groove (12) is also provided with internal threads at its inner side, and the clamp-shaped plastic part (8) is in threaded connection with the trapezoidal groove (12).

3. The locking device for the tunnel embedded groove mold according to claim 1, wherein the pincer-shaped plastic part (8) is of a convex structure, the pincer-shaped plastic part (8) is of a hollow structure, one end of the T-shaped connecting piece (10) is screwed into the pincer-shaped plastic part (8), and a fastening steel plate (5) is sleeved on the part, protruding out of the pincer-shaped plastic part (8), of the other end of the T-shaped connecting piece (10); the T-shaped connecting piece (10) is of a hollow structure, and the bolt (9) penetrates through the center of the T-shaped connecting piece (10) and is in threaded connection with the T-shaped connecting piece (10); the fastening steel plate (5) is arranged between the pincer-shaped plastic part (8) and the die (11).

4. The tunnel embedded groove mold locking device according to claim 1, wherein the T-shaped connecting piece (10) is in threaded connection with the fastening steel plate (5).

5. The tunnel embedded groove mold locking device according to claim 4, wherein the fastening steel plate (5) and the T-shaped connecting piece (10) form an I-shaped structure.

6. The tunnel pre-buried groove mold locking device according to claim 1, characterized in that a gasket (6) is provided between the hexagonal nut (7) and the channel (4).

7. The tunnel embedded groove mold locking device according to claim 1, wherein the cross section of the channel (4) is of an isosceles trapezoid structure, the hexagon nut (7) and the pincer-shaped plastic part (8) are arranged in the channel (4), the upper end surface of the channel (4) is attached to the lower end surface of the embedded anchor rod (1), and the lower end surface of the channel (4) is in contact with the mold (11).

8. The tunnel pre-buried groove mold locking device according to claim 1, wherein the mold (11) is a segment mold, and a longitudinal section of the mold (11) has an arc-shaped structure.

9. The tunnel embedded groove mold locking device according to claim 8, wherein a plurality of bolts (9) are arranged on the mold (11), the bolts (9) are connected with clamp-shaped plastic parts (8), the clamp-shaped plastic parts (8) are connected with locking screws (3) in a clamping manner, and the locking screws (3) are connected with embedded anchor rods (1).

10. The tunnel pre-buried groove mold locking device according to claim 1, characterized in that the bolt (9) is threadedly connected with the mold (11).